diff --git a/package.json b/package.json
index 912d0c84c..50ae6a1ca 100644
--- a/package.json
+++ b/package.json
@@ -139,8 +139,8 @@
     "@types/react": "^18.3.13",
     "@types/react-dom": "^18.3.1",
     "@types/react-table": "^7.7.20",
-    "@vitejs/plugin-react": "^5.1.4",
-    "@vitest/coverage-v8": "^4.0.18",
+    "@vitejs/plugin-react": "^6.0.1",
+    "@vitest/coverage-v8": "^4.1.0",
     "@zakodium/tsconfig": "^1.0.2",
     "cross-env": "^10.1.0",
     "cspell": "^9.7.0",
@@ -157,13 +157,12 @@
     "react-dom": "^18.3.1",
     "react-router-dom": "^7.13.1",
     "rimraf": "^6.1.3",
-    "rollup-plugin-analyzer": "^4.0.0",
     "serve": "^14.2.6",
     "stylelint": "^17.4.0",
     "stylelint-config-standard": "^40.0.0",
     "typescript": "~5.9.3",
-    "vite": "^7.3.1",
-    "vitest": "^4.0.18"
+    "vite": "^8.0.0",
+    "vitest": "^4.1.0"
   },
   "volta": {
     "node": "24.13.1"
diff --git a/vite.config.ts b/vite.config.ts
index c10f170ff..f3e30f112 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -2,7 +2,6 @@ import fs from 'node:fs';
 import path from 'node:path';
 
 import react from '@vitejs/plugin-react';
-import analyze from 'rollup-plugin-analyzer';
 import type { AliasOptions } from 'vite';
 import { defaultClientConditions, defaultServerConditions } from 'vite';
 import { defineConfig } from 'vitest/config';
@@ -21,30 +20,20 @@ export default () => {
 
   return defineConfig({
     base: './',
-    esbuild: {
-      jsx: 'automatic',
-      sourcemap: 'inline',
-    },
+    oxc: {},
     build: {
       sourcemap: 'inline',
-      rollupOptions: {
-        // @ts-expect-error analyzer types are wrong.
-        plugins: process.env.ANALYZE ? [analyze()] : [],
+      rolldownOptions: {
         output: {
-          manualChunks(id) {
-            if (id.includes('node_modules/openchemlib/')) {
-              return 'openchemlib';
-            }
-
-            if (id.includes('node_modules')) {
-              return 'vendor';
-            }
-
-            return undefined;
+          codeSplitting: {
+            groups: [
+              { name: 'openchemlib', test: 'node_modules/openchemlib/' },
+              { name: 'vendor', test: 'node_modules/' },
+            ],
           },
         },
       },
-      minify: process.env.NO_MINIFY ? false : 'esbuild',
+      minify: process.env.NO_MINIFY ? false : 'oxc',
     },
     plugins: [react()],
     resolve: {